Dan Gilbert is the chairman and founder of Quicken Loans and is worth $3.5 billion.

According to Forbes, Gilbert's net worth is $3.5 billion, up from $1.5 billion on the 2012 list.

Gilbert is the founder of Quicken Loans and a major developer of downtown Detroit, where he owns 15 buildings, including the Chase Tower and First National Building. Gilbert, majority owner of the Cleveland Cavaliers NBA team, also has plans to buy control of Greektown Casino-Hotel and to redevelop the old Hudson's department store site.

Gilbert is one of a dozen Michiganders who made the list. The highest-ranking resident is Amway co-founder Richard DeVos, at No. 239 with $5.1 billion.

Mexican telecommunications titan Carlos Slim Helu is the richest billionaire on Earth with $73 billion. Microsoft founder Bill Gates remains in second place with $67 billion and rounding out the top three, with $57 billion is Amancio Ortega, a Spanish real estate tycoon and majority shareholder of the fashion behemoth Inditex.

Moroun dropped from the No. 854 spot in 2012; at the time, his net worth was listed as $1.5 billion.

And Ford, last year, was tied for No. 1,015 with $1.2 billion.

One of the biggest changes on this year's list was that Facebook founder Mark Zuckerberg dropped from 35 to No. 66, now worth $13.3 billion.